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#1
02-24-2010
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getting previous day.
Hi,
i am developing a script for my project. In my script i need to check some conditions based upon some values. in that one value is the previous date. with the previous date i need to check and process some values. I have a function with me retrieve the yesterdays date. But now i have a scenario that i need to check with the yesteday day alone. That is say for example today is Thu,i need to check one day before that is with Wed. i am not sure how to retrieve this Thu-1. I am trying `date %a -1` but its not working. Please help me in this. Thanks, Raju |
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#2
02-24-2010
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#4
02-25-2010
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You can try this,
date +%a -d "1 day ago" This will give the yesterday day name in three letter format.For ex,Wednesday as Wed.If you want full day name,use %A instead of %a. |
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#5
02-25-2010
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ksh93 include printf extension. Gnu date command include also epoc + calculation extensions. Some bsd date include -r option. Ex. using ksh93 Code:
printf "%T" now More example to use printf and date calculation. Or using gnu date command like Code:
#!/someposixsh epoc=$(date -u +%s) echo $epoc (( yesterday=epoc-86400 )) datestr=$(date -d "1970-01-01 $epoc seconds" ) echo $datestr datestr=$(date -d "1970-01-01 $epoc seconds" '+%Y-%m-%d %H:%M:%S' ) echo $datestr echo "yesterday:" date -d "1970-01-01 $yesterday seconds" '+%Y-%m-%d %H:%M:%S' If using date, read your man date. |
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#6
02-26-2010
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The following example used for current date from ago Code:
#date
Tue Feb 23 14:32:14 IST 2010
#date -d "1 day ago"
Mon Feb 22 14:32:18 IST 2010
#date -d "1 week ago"
Tue Feb 16 14:32:24 IST 2010
#date -d "1 month ago"
Sat Jan 23 14:32:29 IST 2010
#date -d "1 year ago"
Mon Feb 23 14:32:35 IST 2009The following example used for current date after Code:
#date
Tue Feb 23 14:35:00 IST 2010
#date -d "+1 day"
Wed Feb 24 14:35:05 IST 2010
#date -d "+1 week"
Tue Mar 2 14:35:09 IST 2010
#date -d "+1 month"
Tue Mar 23 14:35:14 IST 2010
#date -d "+1 year"
Wed Feb 23 14:35:21 IST 2011for more information read the date man page. Last edited by ungalnanban; 03-08-2010 at 11:42 PM.. |
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#7
02-26-2010
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YESTERDAY=`TZ=CST+24 date +%Y%m%d`
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